Pneumatic-tire-protecting magnet.



D. ROSENTHAL. PNEUMATIC TIRE PROTECTING MAGNET.-

APPLICATION FILED JUNE 3,]914.

Patented Apr. 11,1916;

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D..ROSENTHAL.

PNEUMATIC TIRE PROTECTING MAGNET.

APPLICATION FILED JUNE 3. 1914.

. 1,178,680. Patented Apr. 11. 1916.

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DAVID ROSENTHA L, OF BOSTON, MASSACHUSETTS.

PNEUMATIC-TIRE-PROTECTING MAGNET.

Specification of Letters Patent.

Patented Apr. 11, 1916.

' Application filed June 3, 1914. Serial No. 842,717.

' moving tire troubling obstacles composed of ,bycontact magnetic substances, such as scrapiron, chips of metal, tacks, nails, et cetera, from the path in which-the ing, hereby relieving the tire from the possibility of punctures commonly caused with such magnetic obstacles; it being a known fact that a great number of punctures are brought on by the tire passing over such obstacles, which become embedded -in the shoe of the tire and either work up to the inner tube and puncture it, or drop out and leave openings in the shoe,

which fill up rapidly with grit and dirt and form clots (better known as mud boils) which tend to weaken and destroy the shoe, ltimately resulting in blow outs.

Another object tecting magnet that may be carried on a vehicle equipped with pneumatic tires and current generating means, such as are commonly found in the cases of automobiles and motorcycles,the magnet being supplied with current from said generating means and suspended directly in front of the tire sufficiently near to the ground to attract such loose obstacles, consisting of magnetic substances, as happen to be lying in the path that the tire is to travel in on the road,thereby clearing the path ahead of the tire of all such obstacles.

Another object is to provide a tire protecting electromagnet (especially for selfpropelled vehicles equipped with pneumatic tires) of suflicient lifting power to pick up road obstacles and particles possessing magnetic properties, such as are found scattered on the surface of the road in the path of the tire, the electromagnet being positioned ahead of the tire for attracting such obstacles from its path.

- Another object is to provide an electrotread of the tire is travelis to provide a tire pro-' rows. Fig. 9, is

magnet, suspended from a bracket carried on a vehicle, equipped with pneumatic tires, In front of the same and in close proximity with the ground for attracting obstacles, passed over in the road, lying loose and consisting of magnetic substances,-the magnet being supplied with the necessary current from any suitable source of supply, either generated or carried on the vehicle for the purpose.

Still another object is to provide an electromagnet of sufficient lifting power to be located on a vehicle supplied with pneumatic tires, in front of the same, for clearing the path of the tire from all loose obstacles lying along the road and consisting of magnetic substances,the magnet being swingingly suspended and provided with a guide-roller for preventing the magnet from injuring the tire when the magnet is swung toward the same. I

\Vith the above and other objects in view, my invention consists in the novel features of construction and arrangement of parts,

hereinafter described and claimed and illus,

trated in the accompanying drawings.

Referring to the drawings :-Figure 1, is an elevation of a front automobile wheel, provided with the common type of pneumatic tire, showingv my device applied to the same. Fig. 2, is a front View of Fig. 1, showing the bracket, from which the magnet is suspended, fixed to the front axle wheel spindle, so that the magnet will swing with the wheel when the same is being steered. Fig. 3, is a plan view of Fig. 1, showing the magnet-bracket fixed to the front axle wheel spindle. Fig. 4, is a view taken on line 4-4 in Fig. 3, looking in the direction of the arrows. Fig. 5, is a modified connection for coupling the bracket of my device to the front axle wheel spindle. Fig. 6, is the same view as Fig. 1, but shows the magnet swung in a position, with the rolleride of the magnet engaging with the tread of the tire. he bracket is partly sectioned to show the chamber provided to accommodate the wires of the magnet running to the source where the current is supplied. Fig. 7, is a view of the magnet showing the roller-guide. Fig. 8, is a sectional view in- Fig. 7, looking in the direction of the ara sectional view taken on line 9-9 in Fig. 7, looking in the direction of the arrows. Fig. 10, is a sectional view taken on line 8-8 he roller-guide :ihri strap. diagram, showing two ctions, one showing the Oilibtiliffi oi rre i from) LL storzulCl the other showing the magnet. wired direct with a magneto; the storage battery and the magneto being of the type found 'irion on self-propeliedwehicles for ignii. on and lighting purposes.

Likenihnerals refer to like parts through- .out the several Views of the drawings. The nhmerei l i" an ordinary automobile wh'eei snppiied with a pneumatic tire 2. v

.3 is a front axle of a car equipped with the common. type of front axle spindle 4, on which the wheel 1 is carried :rnri allowed to swing for steering purposes. The spindle -i is provided with the ordinary steering-arm 5, wh rl: connects ill the opposite frontwheei of the out: w the connectingie-rer 6,:1ml is iv from "ihe steering whee o t J in lover I as shown in Figs. 2 and 3, where. the orackeiiislieldjon the s fiinriie by the bolts '9, or as is shown in Fig. 5, by being slumped around the spimile 4 with the straw i0 and the tie- 1' is an 'omiinary hors 1% or J -shaped i ior lifting purt ps of elee'iii omagnet us poses, and is specially desiqnezi with the sopporting lu s; 19 which are provided with the hoies 20 for engaging with the swivebstud 14-. The. y ke 21 is preferahiy made integrsl with the (Wes 29,- which are priwieled at th bottom with the pistes the ends o. the cores being riveted over and flushed with {he bottom surface of the plates as shown in Fig. 1G. The cores 22 are provided with iimgneiizing coiis which are wound to allow the current to ciroiiiate'in'opposite directions, or prodoci'ng a positive fill-Ti a hegative pole atihe cheeks yi'ieti'zing coils i)8iIl-."W01lll(i of siirch climeo SiOI RS are known commonpraoiice to produes roa gnei The 'rr I het-KlS provided with i r hie my; whii roi zitahly held iii I the other "sitioir In Fig; 12-, "manly used in. I I hon system on gx ohiies; pro'eeiieoi in :fififlliiiisii ii erieri O in Fir; 9. Fig. 11, a.

i wise, a!

i I iiCiiJi? sus )enrieri irom the axle spindle #3; in any suitable manner, preferably the required lifting power of the 4 rising:

Mir-y magneto r mor" the vehicles have the 1 a coin? ion airj p llblioq Han-Eng "Gris described the parts of iiij invention H1 detzui, the manner in which the some 18 used and operated is es iollowsz-- The eleotromagnet is supplied with current froizi any suitable source of soppiy suihcierit for producing the required lifting power of the mrl'gner. Where the magnet is carried by a Y hicle equipped w: 1h either a rrr wz eio, storage battery or generaor, of suih ient strength the mognei may be eonneoteciwitlany one of them for current. V

The supporting bracket is designed to allow the olectromagiie'b i8 to-De sw ngiiigly suspe r ded therefrom direciiy ii front of the i-ilfi fiiilil t it intend-ed, to proieet, a'zid sujffioientiy near -to the grouiiid, (cieoeodiog uimiir its iifting' ongd i to M mi mag not-i0 substances coming in eonfzrot with it, while being carried along; I'he romi by the moving sehiole;-ihus clearing: the poth ahead for the pneumatic tire to ion in of 211' loose iyingmagnetio obstacles. oommoiiiy' found on the road and known re he injurious to the life of; the tire The magnet 18 is supported prefeahly in ii swinging"man-- nor on the swivelstud H- for the purpose. of protecting the i'nagnet and showing i't' t of clear extraordinary, projecting .obstaole's passed over in ihe road. Theroller-guide which is found or: 119 si le the magnet nearest to the tire is intenaierl to keep the magnet from interfering with the hire and injuring it, when swung in the position shown in 361g. 6. It must he unelerstood that theinzi'gnet should he suspesi ioii close enough to the ground 40 give the required result; biit that it may he designed and built. with any '(lesirefii lifting power for operating through a given distance from the ground, for attracting magnetic suhstanoes passed over hy it. So that, while vmy drawings show the. magnetsuspeneied comparatively near *0 the ground, there is no reason why the some may no? he higher,- it siinpiy being matter of pro .viding a magnet that is strong enough to work through the. distance that it is located above the ground. Also, while I have shown the rmigner hung close to the tire, the some ms}? o r QBOllgii fr'ozrrhe tire oelenrthe extreme posiion andconsequently eliminate he the rolieoguicle. Vfihilel have shown the magnet e'ppiied lion right; hand front wheel of an mitomo ;hile,;- the some may he applied to a left hand wheel, by -using a ieft hen-ii hraeket. Also,

I hag-e shown my device'appiiedto the front wheel of a vehicle 101 $3 7 ssl with the front wheels, and except in going around short curves, the rear wheels travel in the same path along the road as the front wheels do,-so that the obstacle, once removed for the front wheels, leaves the path clear for the rear wheels as well. However, I do not wish to be limited against using the magnet on the rear wheels as well as on the front wheels. Again, while I have shown the bracket fixed to the pivot-spindle of the front axle for following the wheel when it is being steered, the bracket may be fixed to be stationary with the front axle 3, as is indicated by the dotted position shown in Fig. 2. Also, while I have shown my device applied to an automobile wheel, I do not wish to be limited against using the same in connection with any other type of pneumatic wheel, especially that of the motorcycle, where my type of tire protector will be specially serviceable,since the motorcycle tire is much more delicate and susceptible to punctures than the automobile tire.

It may be observed that my device is simple in construction, and inexpensive to manufacture, as Well as inexpensive to operate. It may be applied to any type of vehicle using pneumatic tires, and will positively insure against punctures from petty obstacles consisting of magnetic substances.

While I realize that punctures are caused by other obstacles than those possessing magnetic properties, yet it is a fact that such obstacles are credited with causing no less than 25% of all punctures, and my device is intended to eliminate punctures to that extent.

While the preferred embodiments of the invention have been described in detail, it must be understood that I do not wish to be limited to the particular construction set forth,-since various changes in the form, proportion and arrangement of parts and in the details of construction may be resorted to without departing from the spirit and scope of the invention.

Having thus described the invention, I claim 1. A pneumatic tire protecting magnet of the character described, consisting of an electromagnet; means for pivotally suspending the same from a vehicle; and means provided on said vehicle for supplying the curthe character described, consisting of an electromagnet provided with a roller-guide "and suspending lugs; a suspending member adapted to be rigidly fixed to a vehicle and provided with suspending lugs; and a pivot stud engaging wit said suspending'lugs for pivotally suspending said lectromaguet.

3. A pneumatic tire protecting magnet of the character described, consisting of a horseshoe type electromagnet, havingsus' pending lugs provided in the yoke of the same; a roller-guide carried on said ma'gnet; a suspending bracket provided with suspending lugs and recesses for the wires connecting with said magnet; and a pivoting pin adapted to pii'otally engage said magnet with said bracket.

r. A. pneumatic tire protecting magnet of the character described, consisting of a Q- shaped elect-romagnet, having the yoke of roller-guide member adapted to be strapped to said electromagnet; a suspending-arm provided with suspending-lugs and adapted to be secured to a vehicle; a pivoting bolt for pivotally coupling said electromagnet with said suspending-arm; and generating means provided on said vehicle for supply and a pivoting-pin for pivota-lly engaging thesuspending-lugs of said magnet with said carrier-arm.

6. A pneumatic tire protecting 'magnet of the character described, consisting of a U- shaped lifting electromagnet having the yoke and the cores of the same made in tegral and provided with suspending-lugs; a suspending bracket provided with suspendthe same provided with suspending lugs; a w

ing-lugs and a wire recess, "and adapted to be rigidly fixed to a vehicle; a coupling member adapted to swingingly engage said magnet with said suspending bracket; a1

roller-guide member adapted to .be rigidly fixed to said magnet; and means provided on said vehicle for supplying the current to said magnet. 7. A pneumatic tire protecting magnet of the character described, consisting of. a U- ,7

shapedlifting electromagnet, having the yoke and the cores ofthe same made integraland provided with suspending-lugs; a

suspending bracket having wire recesses and.

adapted to be clamped in position by a clamping member, provided on the same; a-

coupling member adapted to swingingly en gage said magnet with said suspending bracket; and aroller-guide. member adapted to be rigidly fixed to said'magnet.

8. A pneumatic tire protecting magnet of V the j character described, consisting of an electromagnet in circuit with the ignitionsource of a combustion engine carried on a self-propelled vehicle; and means for*pivotally suspending said-magnet ahead of the tire and in line with the path of the'tread 1:

of the same.

- 9. pneumatict-ii e prdtecting magnet 0f she characbei" described, consisting. of :1 hoi'ses'hoe type 'eiecti-omagnet connected i'zi' circuit with any suitable somceof current supply, commonly carri sd on self-propelled vehicles for lighting or ignition purposes; {ii d means for pivotaliysuspending said magnet-in line with and ahead of the WhQBiS 0i? said-vehicle, for attracting obstacles of magnetic are to run.

\ -1, in the ropei-ti'is from the path in whii's maxim 

